82510785400 has 48 divisors (see below), whose sum is σ = 191857407840. Its totient is φ = 33000902400.

The previous prime is 82510785391. The next prime is 82510785403. The reversal of 82510785400 is 458701528.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (82510785403) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2952292 + ... + 2980108.

It is an arithmetic number, because the mean of its divisors is an integer number (3997029330).

Almost surely, 2^82510785400 is an apocalyptic number.

It is an amenable number.

82510785400 is an abundant number, since it is smaller than the sum of its proper divisors (109346622440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

82510785400 is a wasteful number, since it uses less digits than its factorization.

82510785400 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42664 (or 42655 counting only the distinct ones).

The product of its (nonzero) digits is 89600, while the sum is 40.

The spelling of 82510785400 in words is "eighty-two billion, five hundred ten million, seven hundred eighty-five thousand, four hundred".